The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 1987
Filed:
Feb. 04, 1986
Applicant:
Inventors:
David W Hanson, Golden Valley, MN (US);
Richard R Koehn, Prior Lake, MN (US);
Richard C Nash, New Prague, MN (US);
Lonnie G Fox, Burnsville, MN (US);
Assignee:
Fabcon, Inc., Savage, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E04C / ;
U.S. Cl.
CPC ...
52687 ; 52689 ; 52678 ;
Abstract
The chairs include a lower chair portion for supporting multiple prestressing cables at the bottom of a plank and a narrow upper chair portion for supporting an upper prestressing cable located in the web between the hollow cores of the prestressed plank. The upper chair portion can be inserted into the strand receiving cups of the lower portion to form a structurally sound support for accurately placing the top and bottom reinforcing strands in the plank as it is cast.